Where would you take a friend who's visiting Riyad (Riyadh)

A friend of mine is coming to Riyadh for 4 days in a business trip. I'm thinking where can i take him ? and what kind of attractions can we both visit ? - Road Trips , Desert and Edge of the world are good options but we need a gathering. - Local restaurant like Najd Village is on the list. - He doesn't like historical places very much.